source ~/SHELL/isFileEmpty.sh
if [ $# -ne 3 ]; then
	echo "This shell merge two junction files to one"
	echo "The junctions files are in the BED format with each row:"
	echo "chr start end suppor_readst strand"
	echo "The ptrs are"
	echo "(1) first input file"
	echo "(2) second input file"	
	echo "(3) output file"
	echo "3 ptrs are needed"
	echo "$# is provided" 
	exit 0
fi
# TODO complete the function

